Secret Service staffing shortage prompts Trump campaign to move Wisconsin rally

Former President Donald Trump's campaign scrapped plans for an upcoming outdoor rally in Wisconsin after the Secret Service said it did not have the personnel needed to secure the site, multiple sources told CBS News.

The rally was set to take place outdoors at an airport on Saturday, but Trump will instead deliver remarks at a smaller indoor arena in Prairie du Chien, Wisconsin. 

The Secret Service said it was short-handed due to the ongoing annual meeting of the United Nations General Assembly in New York. The service is responsible for providing security for foreign dignitaries while they are in the U.S.